Mohammed Said Idries, of the Al Ahram Center for Strategic Studies, says that there are many reasons why the electoral law remains stalled in the Iraqi parliament, but that the quarrel about the identity Kirkuk is one key stumbling block.

VOA: standard.2009.10.26

That belief in Christ is to some a matter of life and death has been a stumbling block for readers who would prefer to think it a matter of no great consequence.

有些读者认为,对基督的信仰是关乎生死的大事,这对于那些对基督教,不以为然的人是一个障碍。

耶鲁公开课 - 1945年后的美国小说课程节选

What seems so obvious, at least to me here in reading Lycidas, is that at this point in 1637 there's a stumbling block or a hurdle that Milton in his race simply can't get over.

在我读的过程中，显而易见的是，是在1637年时弥尔顿在他的职业生涯里,有一道无论如何也过不去的坎。

耶鲁公开课 - 弥尔顿课程节选

"There is a sense that when the political leaders arrive in the next few days, that they will be able to overcome some of the stumbling blocks, because I believe the leaders will be able to really grab this issue by the scruff of the neck and get down to the substance and bridge the remaining gaps,".

VOA: standard.2009.12.17